SN74LS642N TI Bus Transceiver | 20-PDIP | 8-Bit, Inverting, 3-State

Product Overview

The SN74LS642N is a high-performance 8-bit bus transceiver from Texas Instruments, designed for bidirectional asynchronous communication between two data buses. It features inverting outputs and 3-state outputs for bus-oriented applications. Housed in a 20-pin PDIP package, this device operates from a 5V supply and is compatible with TTL logic levels. The SN74LS642N is ideal for memory interfacing, microprocessor systems, and data communication where signal direction control and bus isolation are required.

Detailed Technical Specifications

Key Features

• 8-bit bidirectional bus transceiver with inverting outputs
• 3-state outputs for bus isolation
• Separate direction control (DIR) and output enable (OE) pins
• Low power consumption: typical ICC = 40 mA
• TTL input and output compatibility
• High noise immunity: typical VNH = 1V, VNL = 1V
• ESD protection: 2000V HBM
• Industry-standard 20-pin PDIP package

Target Applications

• 5G base station control logic interfacing
• Automotive dashboard display data bus
• Industrial PLC backplane communication
• Memory address/data bus buffering in embedded systems
• Telecommunications line card signal routing

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for SN74LS642N. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

SN74LS642N 是德州儀器（TI）的高性能8位總線收發器，專為兩個數據總線之間的雙向異步通信而設計。它具有反相輸出和三態輸出，適用於總線導向的應用。該器件採用20引腳PDIP封裝，工作電壓為5V，與TTL邏輯電平兼容。SN74LS642N 非常適合需要信號方向控制和總線隔離的存儲器接口、微處理器系統和數據通信應用。

詳細技術參數

核心特性

• 8位雙向總線收發器，帶反相輸出
• 三態輸出，用於總線隔離
• 獨立的方向控制 (DIR) 和輸出使能 (OE) 引腳
• 低功耗：典型 ICC = 40 mA
• TTL 輸入和輸出兼容
• 高噪聲抗擾度：典型 VNH = 1V, VNL = 1V
• ESD 保護：2000V HBM
• 行業標準 20 引腳 PDIP 封裝

典型應用場景

• 5G 基站控制邏輯接口
• 汽車儀表盤顯示數據總線
• 工業 PLC 背板通信
• 嵌入式系統中的存儲器地址/數據總線緩衝
• 電信線路卡信號路由

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 SN74LS642N 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]